Instead, the "Friends" alum hosted about 80 guests at her newly renovated Bel-Air abode, which she purchased in February 2012 for $24.9 million and spent quite a bit of time renovating, for her actor beau's birthday, just like her rep said she was doing.

The timing was also perfect, since the day marked the one-year anniversary of Theroux's proposal to the actress. He proposed on his birthday last year, so the rumor mill had that occasion-eclipsing precedent to go on.

Maybe this was her way of saying, "Hey, thanks for proposing to me on your big day last year, allow me to return the favor."

The casual affair mostly took place on Aniston's massive patio and manicured grounds around her pool, Radar Online reported. Theroux and many of the guests reportedly wore jeans.

Other guests surrounded a fire pit inside the living room, near a huge bar, and an indoor-outdoor deck was home to a buffet of finger foods and small appetizers prepared by Aniston's personal chefs, E! reported. The affair wrapped up around 11 p.m.